Свид, І. В.Обод, І. І.Мальцев, О. С.Штих, І. А.Заволодько, Г. Е.2019-09-132019-09-132019Iryna Svyd, Ivan Obod, Oleksandr Maltsev, Inna Shtykh, Ganna Zavolodko. Model and Method for Detecting Request Signals in Identification Friend or Foe Systems. // 2019 15th International Conference onthe Experience of Designing and Applicationof CAD Systems (CADSM), February 26 – March 2, 2019 Polyana-Svalyava (Zakarpattya), Ukraine. – 2019. – P. 1-4. DOI: 10.1109/CADSM.2019.8779347http://openarchive.nure.ua/handle/document/9677This paper suggests a new model and method for detecting request signals in an Identification Friend or Foe (IFF) aircraft responder. It is proposed to separately accumulate the detected components of a request signal coming from the spaced antennas of an aircraft responder and then decrypt these accumulated components. The comparative analysis of request signal detection shows that the proposed model and method can improve the quality of detection as compared to that achievable with the currently used model and method based on the decryption of request signals received from the spaced antennas of an aircraft responder.enIFFATCaircraft responderrequest signaldetection probabilityfalse alarm probabilityNeumann-Pearson criterionlikelihood ratioArticle